<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button
            type="primary"
            @click="addDialogVisible=true"
          >添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table
        :data="userList"
        border
        stripe
      >
        <el-table-column
          type="index"
          label="#"
        ></el-table-column>
        <el-table-column
          label="姓名"
          prop="username"
        ></el-table-column>
        <el-table-column
          label="邮箱"
          prop="email"
        ></el-table-column>
        <el-table-column
          label="电话"
          prop="mobile"
        ></el-table-column>
        <el-table-column
          label="角色"
          prop="role_name"
        ></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch
              v-model="scope.row.mg_state"
              @change="userStateChange(scope.row)"
            >
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column
          label="操作"
          width="210px"
        >
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-tooltip
              effect="dark"
              content="修改"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="primary"
                icon="el-icon-edit"
                size="min"
                @click="showEditDialog(scope.row.id)"
              ></el-button>
            </el-tooltip>

            <!-- 删除按钮 -->
            <el-tooltip
              effect="dark"
              content="删除"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="danger"
                icon="el-icon-delete"
                size="min"
                @click="removeUserById(scope.row.id)"
              ></el-button>
            </el-tooltip>
            <!-- 分配角色按钮 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="min"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 3, 4]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <!-- 内容主体区域 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item
          label="用户名"
          prop="username"
        >
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item
          label="密码"
          prop="password"
        >
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item
          label="邮箱"
          prop="email"
        >
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item
          label="手机"
          prop="mobile"
        >
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span
        slot="footer"
        class="dialog-footer"
      >
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button
          type="primary"
          @click="addUser"
        >确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名">
          <el-input
            v-model="editForm.username"
            disabled
          ></el-input>
        </el-form-item>
        <el-form-item
          label="邮箱"
          prop="email"
        >
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item
          label="手机号"
          prop="mobile"
        >
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span
        slot="footer"
        class="dialog-footer"
      >
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button
          type="primary"
          @click="editUserInfo"
        >确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="setRoleDialogClosed"
    >
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配的角色：<el-select
            v-model="selectRoleId"
            placeholder="请选择"
          >
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </p>
      </div>
      <span
        slot="footer"
        class="dialog-footer"
      >
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button
          type="primary"
          @click="saveRoleInfo"
        >确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    //验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      //验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        //合法的邮箱
        return cb()
      }
      cb(new Error('请输入合法的邮箱'))
    }
    //验证手机号的规则
    var checkMobile = (rule, value, cb) => {
      //验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        //合法的手机号
        return cb()
      }
      cb(new Error('请输入合法的手机号'))
    }
    return {
      //获取用户列表的参数对象
      queryInfo: {
        query: '',
        //当前的页数
        pagenum: 1,
        //当前每页显示多少条数据
        pagesize: 2
      },
      //获取用户数据成功后保存数据
      userList: [],
      total: 0,
      //隐藏添加用户对话框
      addDialogVisible: false,
      //添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      //添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: `用户名的长度在3~10个字符之间`, trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: `密码在6~15个字符之间`, trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ],
      },
      //控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      //查询到的用户信息对象
      editForm: '',
      //修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: "请输入用户的新邮箱", trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: "请输入用户的新手机号", trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ],
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      //所有角色的数据列表
      rolesList: {},
      //已选中的角色Id值
      selectRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$message.error('获取用户列表失败！')
      this.userList = res.data.users
      this.total = res.data.total
      console.log(res);
    },
    // 监听 pagesize 改变的事件
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    //监听 页码值 改变的事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    //监听 switch 开关状态的改变
    async userStateChange(userinfo) {
      console.log(userinfo);
      const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('修改用户状态失败')
      }
      this.$message.success('更新用户状态成功')
    },
    //监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    //点击按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        //valid是提交表单的规则验证成功后，得到一个布尔值
        if (!valid) return
        //可以发起添加用户的网络请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) return this.$message.error('添加用户失败')
        this.$message.success('添加用户成功')
        //隐藏添加用户的对话框
        this.addDialogVisible = false
        //重新获取用户列表的数据
        this.getUserList()
      })
    },
    //展示编辑用户的对话框
    async showEditDialog(id) {
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) return this.$message.error('打开用户详细数据失败')
      this.$message.success('打开用户详细数据成功')
      this.editForm = res.data
      this.editDialogVisible = true

    },
    //监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    //修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        //发起修改用户的数据请求
        const { data: res } = await this.$http.put('users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status !== 200) return this.$message.error('更新用户信息失败')
        //关闭对话框
        this.editDialogVisible = false
        //提示修改成功
        this.getUserList()
        //提示成功消息
        this.$message.success('更新用户信息成功')
      })
    },
    //根据Id删除对应的用户信息
    async removeUserById(id) {
      //弹窗询问用户是否删除数据
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      //如果用户确认删除，返回的结果是 字符串confirm
      //如果用户取消删除，返回的结果是 字符串cancel
      // console.log(confirmResult);
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败')
      }
      this.$message.success('删除用户成功')
      this.getUserList()
    },
    //展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo

      // 在展示对话框之前，获取所有角色的列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) return this.$message.error('获取角色列表失败！')
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    //点击确定按钮，分配角色
    async saveRoleInfo() {
      if (!this.selectRoleId) {
        return this.$message.error('请选择要分配的角色！')
      }
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectRoleId })
      if (res.meta.status !== 200) return this.$message.error('更新角色失败')
      this.$message.success('更新角色成功！')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    //监听分配角色对话框的关闭事件,重置功能
    setRoleDialogClosed() {
      this.selectRoleId = ''
      this.userInfo = {}
    }
  },
}
</script>

<style lang="less" scoped>
</style>